thread mill code on Acramatic A950

[lowCountryCamo]

Any one ever program a thread mill or helix in incremental with wear comp on a Acramatic A950 Cinci. This is for a 3 spindle gantry.
Is code different than Fanuc? For wear comp you only need G41, no D word, correct?

Thanks,

Steve Austin

 

[lowCountryCamo]

I just found I need a K word which is the lead in in. or mm. Is that correct?

 

[VTM]

Thread Mill

Not familiar with your control. But this is how we do It on a Fanuc. Virtually the same on an Okuma with a few different G codes and different sub calls. This is for one hole #4-40 x .300 deep. Two passes. I guess I should mention the thread mill is .085" in dia.

( EMUGE THREAD MILL )
N5 T5 M6
/M8
S4496 M3
G90 G17 G0 G54 X-.1625 Y-.287
G43 Z.1 H5
M98 P7
G0Z.1M9
G91G28Z0
M30
O0007
( SUB NUMBER 0007 )
G90 G17 G0 X-.1625 Y-.287
M98 P8
G90 G0 X-.1625 Y-.287
M98 P9
M99
O0008
( SUB NUMBER 0008 )
G91
Z-.0704
G42 X-.0018 Y.0018 D5
G1 X-.0003 Y.0001 F1.9
G2 X.0021 Y.0085 Z-.0046 I.0021 J.004
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
Z-.025 J-.0104
X.0021 Y-.0085 Z-.0046 J-.0045
G1 X-.0003 Y-.0001
G40 G0 X-.0018 Y-.0018
G90 Z.1
M99
O0009
( SUB NUMBER 0009 )
G91
Z-.0701
G42 X-.0018 Y.0018 D5
G1 X-.0005 Y.0001 F2.4
G2 X.0023 Y.0122 Z-.0049 I.0023 J.0059
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
Z-.025 J-.0141
X.0023 Y-.0122 Z-.0049 J-.0063
G1 X-.0005 Y-.0001
G40 G0 X-.0018 Y-.0018
G90 Z.1
M99

 

[beege]

Helical Interp on a Cinci

IIRC, yes, a K word for lead per 360 degree circle. Also a Z word, and an I and/or J word to define your arc in absolute (not an increment from your start point). But that was 25 years ago on an 850sx. Could of course be different now.

 

[Jrill]

Any one ever program a thread mill or helix in incremental with wear comp on a Acramatic A950 Cinci. This is for a 3 spindle gantry.
Is code different than Fanuc? For wear comp you only need G41, no D word, correct?

Thanks,

Steve Austin

Hey Steve, I have a cat40 acramatic A900 (~1984)... when was the 950 made? Quick google search and I'm not finding anything.

I have never been able to get a helix to work on our 900. I think our control didn't have the option for it (if you can't get it to work, that's a possibility). I can share pages from our programming manual that describe how to do a helix if you want. As far as I remember it was a long line of code and yeah it had a K for helix lead or something.

 

[g-coder05]

I just found I need a K word which is the lead in in. or mm. Is that correct?

I'm guessing this is that Goliath at PMI? Ive spent many a long days on that thing. Those Acramatics need IJK for thread milling. Here's a sample of a 1.125 ID thread mill for that thing.

(PGM,="FM1 SETUP 54 "L1)N15 ; CINCINNATI T-500 3 AXIS POST, PROGRAM DATE 2-22-2007
N20 ;FeatureMILL 4/1/97 KK
N25 ; OPERATION NAME: THREAD_MILL1
:30 G00 G17 G40 G47 G70 G94 G90
N35 T101 M06 M26 M39 ;TOOL: 01 DIA: 0.8688
N40 S5200 M03 M08
N45 G00 X5.25 Y1.5 Z1.0 D54
N50 Z0.125
N55 G01 G42 X5.3916 F5.6
N60 G02 X5.3916 Y1.5 Z0. I5.25 J1.5 K0.125 F11.1
N65 X5.3916 Y1.5 Z-0.125 I5.25 J1.5 K0.125
N70 X5.3916 Y1.5 Z-0.25 I5.25 J1.5 K0.125
N75 X5.3916 Y1.5 Z-0.375 I5.25 J1.5 K0.125
N80 X5.3916 Y1.5 Z-0.5 I5.25 J1.5 K0.125
N85 X5.3916 Y1.5 Z-0.625 I5.25 J1.5 K0.125
N90 X5.3916 Y1.5 Z-0.75 I5.25 J1.5 K0.125
N95 X5.3916 Y1.5 Z-0.875 I5.25 J1.5 K0.125
N100 X5.3916 Y1.5 Z-1.0 I5.25 J1.5 K0.125
N105 G01 G40 X5.25
N110 G00 Z1.0
N115 M05 M26 ; PROGRAM END
N120 M02


Is this it?

 

[lowCountryCamo]

I'm guessing this is that Goliath at PMI? Ive spent many a long days on that thing. Those Acramatics need IJK for thread milling. Here's a sample of a 1.125 ID thread mill for that thing.

(PGM,="FM1 SETUP 54 "L1)N15 ; CINCINNATI T-500 3 AXIS POST, PROGRAM DATE 2-22-2007
N20 ;FeatureMILL 4/1/97 KK
N25 ; OPERATION NAME: THREAD_MILL1
:30 G00 G17 G40 G47 G70 G94 G90
N35 T101 M06 M26 M39 ;TOOL: 01 DIA: 0.8688
N40 S5200 M03 M08
N45 G00 X5.25 Y1.5 Z1.0 D54
N50 Z0.125
N55 G01 G42 X5.3916 F5.6
N60 G02 X5.3916 Y1.5 Z0. I5.25 J1.5 K0.125 F11.1
N65 X5.3916 Y1.5 Z-0.125 I5.25 J1.5 K0.125
N70 X5.3916 Y1.5 Z-0.25 I5.25 J1.5 K0.125
N75 X5.3916 Y1.5 Z-0.375 I5.25 J1.5 K0.125
N80 X5.3916 Y1.5 Z-0.5 I5.25 J1.5 K0.125
N85 X5.3916 Y1.5 Z-0.625 I5.25 J1.5 K0.125
N90 X5.3916 Y1.5 Z-0.75 I5.25 J1.5 K0.125
N95 X5.3916 Y1.5 Z-0.875 I5.25 J1.5 K0.125
N100 X5.3916 Y1.5 Z-1.0 I5.25 J1.5 K0.125
N105 G01 G40 X5.25
N110 G00 Z1.0
N115 M05 M26 ; PROGRAM END
N120 M02


Is this it?
View attachment 268405

That is it. Did you work hear?

 

[Mud]

Hey Steve, I have a cat40 acramatic A900 (~1984)... when was the 950 made? Quick google search and I'm not finding anything.

I have never been able to get a helix to work on our 900. I think our control didn't have the option for it (if you can't get it to work, that's a possibility). I can share pages from our programming manual that describe how to do a helix if you want. As far as I remember it was a long line of code and yeah it had a K for helix lead or something.

950 was late 80s early 90s along side the 850. The 950 was for controlling more than 3 axes. 900s did need the helix option to thread mill, they needed an option for just about everything. On mine with helix, you programmed a G3 with a Z move at the endpoint of the quadrant to determine the pitch, every quadrant (90°) needed to be programmed. 950 code is a lot like 850 code, I've never run a 950 but the programs I've seen look very similar.

 

[Ox]

A little late to the game, and I haven't used the cutter comp, but I have thread milled on the 950, and it's no big deal.
Just a circ interp with a Z and the incr (K?) and your done I think.

I didn't know that the 900 was available with 3x?
Mine - like his - was only a 2x control. No 3x work could be done.
When I tried to write a helical code for it - it would go to the end of the quadrant and then the Z moved down, and then would go again.

Yeah, that dog don't hunt....


-----------------------

Think Snow Eh!
Ox

 

[Mud]

I didn't know that the 900 was available with 3x?
Mine - like his - was only a 2x control. No 3x work could be done.
When I tried to write a helical code for it - it would go to the end of the quadrant and then the Z moved down, and then would go again.

Yeah, that dog don't hunt....


-----------------------

Think Snow Eh!
Ox

I had one that did and one that didn't. There was a long list of option available for the 900. Even G41/42 was an option.
One of mine had a factory 4th axis and had a dozen or more fixture offsets but they weren't like G54, the machine went to the programmed position in absolute then jogged over to the offset position before Z-ing down to the part. I didn't use that...

 

[g-coder05]

That is it. Did you work hear?

When I was the factory manager at Continental I would go over and use it when you guys had open time. That's a sweet machine but I couldn't get it to stop making quadrant lines when interpolating circles. But for a machine that runs off of gear rack and no ball screws it is dead accurate. I tried to get Erich to buy it for a long time but just didn't have enough space.

 

[Nami]

Try this:

; BORE
M1
:T4 M6
S6000 M3
M8
G0 Z6
G0 X0 Y0.005
G0 Z2
G1 Z0.1 F15
G1 G41 Y0
G3 X1 Y0 I0.5 J0
G3 X1 Y0 Z-1.0 I0 J0 K0.1
G3 X1 Y0 I0 J0
G3 X0 Y0 I0.5 J0
G1 G40 Y-0.005
G0 Z6
M9

 

[Ox]

That looks LH to me.


---------------

Think Snow Eh!
Ox